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Practice problem

Grade 2 · 2.NBT.B.5

Use a number line

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Analyze an error

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Make a ten while adding

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Use a number line

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Analyze an error

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Make a ten while adding

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Use a number line

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Analyze an error

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add or subtract within 100

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Compare two addition strategies

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Explain an addition strategy

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Fix a regrouping error

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Fix a subtraction error

Individual task

Practice problem

Grade 2 · 2.NBT.B.5

Add by tens and ones

Individual task

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